Child-proof screw closure
CA 1321166 C · Owner: Kaschewski, Bernd · Inventors: Schick, Jurgen; Ehrenfried, Kurt; Kaschewski, Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a non-strippable child-, proof screw closure for containers and especially for, storage bottles containing cleaning liquids comprising a, pourer arranged on the container having external threads and radially extending stops formed thereon and a screw cap with, catches which can be opened out by the stops. The screw cap has a separate internal threaded piece.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 10, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 10, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.